Gas burner



Sept. 24, 1940.

E. H. MUELLER v as BURNER Filed Sept. 26. 1939 2 Sheets-Sheet l lllll :IENTOR. Erwin H. Mueller P E. H. MUELLER 2,215,711

GAS BURNER Filed Sept. 26, 1938 Shoets$hee.t 2

INVENTOR. Ev'vin W. Mueller M @4 Av W Patented Sept. 24, 1940 UNITED STATES PATENT "OFFICE I GAS BURNER I Ervln n. mans, Grosse Pointe Park, Mich. Application September 26, 1938, Serial No. 231,644

5 Claims. (Cl. 158-115) This invention relates to a gas burner structure and it has to do particularly with a dual burner or, in other words, a burner having sections separately supplied with gas for supporting Among the objects oftlie invention isthe provision of a dual burner wherein one burner defines a closed area, and this one burner may be of annular form, and wherein another burner 1 section is disposed within the closed area. With a burner structure of this type difllculties are encountered in ignitingthe inner burner from a remote pilot flame. It is often the desire to ignite the inner burner section first, as the inner 15 burner usually supports a smalbflame for simmering purposes, and it will be appreciated that the outer or annular burner section more or less obstructs the passage of the flash tube of a lighter. It will be understood that'the dual orno double burners may be used with a double outlet valve which, when turned to one "on position, supplies gas to one burner and which, when turned to another on positiommay supply gas to the other burner section or to both sections.

as The burner 01 this invention is so arranged that,

either the inner or the outer burner may be ignited directly from a remote pilot flame and in I both cases the ignition takes place or occurs from a flash tube located outside of the annular so burner.

on the gas supplyto eflect a flash for igniting purposes.

. In the drawings:

Fig. 1 is a general view illustrating two burners a constructed in accordance with the invention and showing the burners associated with a pilot flame hous n Fig. 2 is an enlarged cross-sectional view taken substantially on' line 22 of Fig. 1.'

a Fig. 31s sectional view takenon line cr nge.

side or the" burner which is arranged for the issuance of gas-tor ignition purposes.

'9 Hz. 5 is a sectional view taken substantially on line l.l of Fig. 2, showing the completeburner.

Fig. 6 is a sectional view taken substantially on line 5-4 at Fig. 5 but showing the complete burner. V

. Fig. '1 is a view taken-substantially on the .on the line 9-9 of Fig. 8.

- Hg. 4 is'a" perspective view looking at the 1-1 of Fig. 1 showing the gas inlet ports.

Fig. 8 is a view similar to Fig. 3 showing a modifled'form. P

.Fig. 9 is a sectional view taken substantially Fig. 10 is aperspective .view similar to Fig. 4 and illustrating the modified form.

In a gas range, a plurality of burners are usual- 1y arranged in spaced relation, two of which are illustrated in Fig. 1. Each burner, as illustrated, rests on a support I and each has two mixing tubes 2 and 3 which may be cast integrally. A double outlet valve 4 receives gas from a supply pipe or manifold 5. These valves are of the type which have at least two on positions; in one on position gas is supplied to one mixing tube and in another on position gas is supplied to both mixing tubes or, if desired, to the other mixing tube only. Such valves are known to those versed in the art and need not be further described. The ends of the mixing tubes which connect to the valves may be shiftable. valve plates 6 covering or partially covering openings for the entrance of air and which are adjustedto obtain a proper combustible mixture.

The housing for a pilot flame is illustrated at 1 and which is located generally somewhat centrally of a plurality of burners and which is supplied with gas through a tube Boonnected in the mani old 5. A plurality of flash tubes 9 extend an" fro the housing and one extends to each of th burners. As illustrated in Fig.1, only two burners are shown but four flash tubes are indicated,'thus representing the presence of four burners.

As'illustrated herein the burner'incorporates both burnersections into one unit although the burner sections may be entirely separate. The structure illustrated shows a lower portion I5 which may be cast integrally with the mixing tubes 2 and 3, as shown in Fig. 5. The passageway of the mixing tube 2 extends as at It into a a.

central opening 11. The'passageway of the mix- 7 ing tube 3 opens as at i8 into a circumferential passageway l9. This portion of the burner may have supporting legs 20 arranged to rest upon the supports I. This portion of the burner, as above mentioned, is integral, the central portion having a bridge 22 connecting the outer portion and a bridge 23 also connecting the inner-and 5o .outer portions; but the bridge 23 has a passageway 24 therein. The inner and outer sections have openings 25 between them for the passage of secondary air therethrough.

The upper portion of the burner may comprise a casting formed with a shape to match that of the lower portion having a central opening or passageway Ila and a circumferential channel or passageway |9a, bridges 22a and 23a but the bridge 23a having a passageway 24a. These two sections are placed together in matching relationship with a gasket or with stove putty between them, as illustrated at 30, and the sections maybe secured together by means of screws 3|.

The inner burner section has a plurality of apertures for flame supporting gas as illustrated at 35, which communicate with the central passageways l1 and Ila. The outer section has apertures 36 and flame supporting. gas which communicate into the annular channels I9 and l9a. At the location where the channel I911. extends across the passageway 24a there is a "partitioning wall 31 which separates the gas for the inner and outer burners. Thus the passageway 24 cuts across the channel I90, which is reduced in size at this location, as shown in Fig. 2. Furthermore, the bridge 23a has relatively small dimensions and only reduces the cross section of the channel |9a for a distance substantially equal to the width of the bridge "23 as shown in Fig. 5, with the result that only two or .three of the holes 36 connect into the reduced section and there is adequate flow of gas to these apertures.

The flash tube connects to the burner for igniting purposes and, as shown herein, the lower portion of the burner has an extension 40 with an aperture for receiving a stud 4| carried by the flash tube and an aperture 42 therethrough for secondary air. The burner has a. port 45 through its wall and connecting to the passageway 240. and gas issuing therefrom is ignited by the flash from the flash tube 9. The burner has of igniting the same is as follows: When the valve is'turned on to supply gasto the inner burner through the mixing tube 2 and channels l6, l1 and Na, g'as also flows through the channel 24a and out through the ports 45, 41 and 46. The gas issuing from the port 45 flows through the flash tube and is ignited by the pilot flame in the housing I. This creates a flash back in the manner well known to those versed in this art and gas issuing from the port 45 is ignited. The flame then ignites the gas issuing from 41 and this flame in turn ignites gas issuing from the port 46 and the flame from port 46 extends upwardly partiallydue to the angular disposition of this port. Gas also issues from the ports 35 and the gas from one of these ports, or at least one of them, is projected into the guard passageway .5| which substantially overlies the port 46.

The flame fromport 46 ignites the gas issuing confines a body of gas so that it may be readily ignited from a flame issuing from port 46 and protects this body of gas from cross drafts and otherwise concentrates a combustiblemixture ad- 1 jacent to and above the port 46.

Now suppose that the valve is turned to another on position so as to supply gas to the .outer burner through the mixing tube 3 and channels l9 and |9a.. Gas issues from the ports 36 and one or more of these ports as shown in Fig. 4 is in proximity to the port 46 and therefore the flame issuing from port 46 ignites the gas issuing from the ports of the outer burner. There-v fore, it will be seen that both the inner and outer sections are ignited from the flame issuing from port 46. The valve may be so arranged that when it is turned to supply gas to the outer burner section the gas supply to the inner burner section is cut off. On the other hand, the valve arrangement may be such that the gas is first supplied to the outer burner, in which event, there will be a flash as above described and the outer burner will be ignited by the flame issuing from port 46. If gas is suppliedto the inner burner section after the outer burner section is ignited, the inner burner section is ignited by the flame issuing either from the port 46 or from. one of the ports 36 which is adjacent the guard aperture 5|.

Another feature of this burner is a safety feature in that either burner-will automatically reignite in the event that it is accidentally extinguished. Suppose the inner burner is extinguished by a draft of air; the gas continues to discharge and so long as the flame at 45 is burning the inner burner will automatically reignite from the flame issuing from 46. If the flame 46 is extinguished, it will'be automatically reignited by the flame at 45. If the flame 45 is also extinguished the gas issuing therefrom will travel from the flash tube and there will be a flash back to ignite either of the burners as above described. Heretofore in gas burners with which I am familiar, if the flame from the burner was extinguished it was necessary to turn the valve ofi and then turn the valve on again in order to effect a new flash. In other words, the only way the burners could be ignited was by a flash action. It will be noted that with this arrangement it is only necessary to have the flash to ignite the gas issuing at 45 and as long as this small flame is burning either burner will ignite or reignite therefrom. a

A modified arrangement is shown in Figs. 8, 9 and 10. The modification resides principally in a variation in the position of the igniting ports.

This burner has the same general structure as the one previously described and the same reference characters will (be applied to like parts.

However, in this modified form, a port is positioned to project gas into the flash tube and upon ignition the flame will ignite gas issuing from port 56. To facilitate this action the metal of the burner opposite the port 56 may be provided with a groove 58. The flame fromport 56 will ignite gas issuing from. an upwardly directed port 51. The flamefrom port 51 will extend upwardly and ignite the gas in the guard aperture 5| which will result in the ignition of the gas issuing from the inner burner. Also, the flame from, port 51 will ignite gas issuing from the adjacent ports 36 of the outer burner. This burner like the one previously described, will automatically reignite from the flame issuing from port 51.

Thus, it will be seen that a burner structure is provided which has an outer burner which may be of annular form and an inner burner located within the-outer burner and wherein the inner burner is ignited by a flash tube which terminates at a point outwardly of the outer burner. Each burner section is so arranged as to be ignited from the pilot flame and it is not necessary that one burner ignite from the other.

I claim:

1. In a gas burner, the combination of an outer burner shaped to define a closed area, an inner burner located within the area, both burners having means for the outlet of gas for supporting gas flames, a pilot burner arranged to receive a constant supply of gas for the constant burning of a pilot flame, said pilot burner being positioned outside the closed area of the outer burner and remote from the outer and inner burner so that the pilot flame will not normally ignite the inner and outer burner, a flash tube extending from the pilot burner toward and having an open end spaced from the outer burner, separate means for supplying gas to the outer and inner burners, said inner burner having an interior gas chamber extending outwardly therefrom and the chamber having a port located adjacent the outer periphery of the outer burner for directing gas into the said open end of the flash tube for the ignition of gas issuing from the said port, and port means connecting to the gas supply for the inner burner for carrying the flame of the ignited gas issuing from said portupwardly and inwardly over the outer burner to ignite'the inner burner. h

2. In a gas burner, the combination of an outer burner shaped to define a closed area, an inner burner located within the area, both burners having means for the outlet of gas for supporting gas flames, a pilot burner arranged to receive a constant supply of gas for the constant burning of a pilot flame, said pilot burner being positioned outside the closed area of the outer burner and remote from the outer and inner burner so that the pilot flame will not normally ignite the inner and outer burner, a flash tube extending from the pilot burner toward and having an open end spaced from the outer burner, separate means for supplying-gas to the outer and inner burners, said inner burner having an interior gas chamber extending outwardly there-.

from and the chamber having a port located adjacent the outer periphery of the outer burner and below the flame supporting outlets thereof for directing gas into the flash tube for the ignition 01! gas issuing from the said port, said inner burner having other ports adjacent the outer periphery of the outer burner for the issuance of gas to be ignited from the flame of the first mentioned port and arranged to support'an upwardly extending flame, and guard means for causing gas issuing from the inner burner to be ignited by the upwardly directed flame at a point adjacent the outer periphery of the outer burner.

3. In a gas burner, the combination of an outer burner shaped to define a closed area, an inner burner located within the area, both burn are having means ior'the outlet of gas for supporting gas flamesfia pilot burner arranged to receive a constant supply of gas for the constant burning of a pilot flame, said pilot burner being positioned outside the closed area of the outer burner and remote from the outer and inner burner so that the pilot flame will not normally ignite the inner and outer burner, a flash tube extending from the pilot burner toward the outer burner and having an open end spaced therefrom, separate means for supplying gas to the outer and inner burners, said inner burner having a gas chamber extending outwardly therefrom and the chamber having a port located adjacent the outer periphery of the outer burner for directing gas into the flash tube forthe ignition of gas issuing from the said port, another port connecting into said chamber for supporting an upwardly directed flame which is arranged to be ignited from the flame from the first port, the outlet means for the outer burner being positioned to be ignited from said upwardly directed flame, and guard means adjacent the top oi an outer burner for causing gas projected outwardly from the flame supporting means of the inner burner to be ignited from said upwardly directed flame.

4. In a gas burner, the combination of an outer annular burner, an inner burner, a remotely positioned pilot burner, a flash tube extending from the pilot burner toward and terminating with an open end outside of and spaced from the outer burner, a plurality of ports connecting into the inner burner and having outlets adjacent the outerperiphery of the outer burner and adjacent the flash tube for the issuance of gas therefrom to be ignited and for the transference of flame upwardly to ignite the outer burner and guard means adjacent the upward flame for guarding gas issuing from the inner burner and over the outer burner for the ignition of the inner burner.

5. In a gas burner, the combination of an annular outer burner, an inner burner'within the annular burner, a pilot burner-located out 01 lgniting relation with the inner and outer burner, a flash tube extending from the 'pilot burner toward and terminating with an open'end outside of and spaced from the outer burner, the outer and inner burners having outlet means for gas to support gas flames, a gas chamber connecting into the inner burner and extending outwardly therefrom and having a plurality of ports opening adjacent the outer periphery of the outer burner and below the gas outlet means thereof, one for directing gas into the flash tube for ignition purposes! and another for supporting an upwardly directed flame for the ignition of the outer burner, and guard means located above the plurality of ports and positioned adjacent the top and periphery of the outer burner for confining and protecting gas issuing from the inner burner for the ignition of such gas and ignition of the inner burner.

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